<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <script src="./js/react.development.js"></script>
  <script src="./js/react-dom.development.js"></script>
  <!-- babel: 将jsx转换为js -->
  <script src="./js/babel.min.js"></script>

  <style>
    .active {
      color: rgb(43, 123, 192);
    }
  </style>
</head>
<body>
  <div id="app"></div>

  <script type="text/babel"> /* 告诉babel编译内部的jsx代码 */
    // 创建虚拟DOM  使用JSX => 需要 babel编译后运行
    const vDom = <div>
        <h2 title="aaa">bbbb</h2>
        <p className="active">cccc</p>
      </div>

    // 渲染虚拟DOM
    ReactDOM.render(vDom, document.getElementById('app'))
  </script>
</body>
</html>